Cream separator



P. M. SHARPLES ETAL July 3, 1928.

CREAM SEPARATOR 3 Sheets-Sheet Filed Aug. 2. 1922 0M 7 OFF H m ,2 W .uwm u g .M 1 J A mQ July 3, 1928.

P. M. SHARPLES ET AL CREAM SEPARATOR Filed Aug. 2, 1922 s Sheets-Sheet 2July 3, 1928.

6 P.'M. SHARPLES ET AL CREAM SEPARATOR Filed 2. 1922 3 Sheets-Sheet 3 .25&0. 6: Q (a jnvenf t Patented July 3, 1928.

TUNITED STA I IIILII M.'SHARPLES AND DAvID TOWNSEND sI-IAEPLEsoE wEsCHEsTER, PENN- T E i sYLvANIA, ASSIG1\TOBS To sHAEPLEs SEPARATORCOMPANY, OF 'wEs'T' CHESTER, PENNSYLVANIA, A CORPORATION OF. PENSYLVANIA.

- CR AM sEr EATon.

;App1ication filed August 2, 1922 Serial 119,579,200;

This invention relates to centrifugal separators, and more particularlyto, such a separator of the hand-operated type.

One of the objects of this invention is to provide a separator ofrelatively small size and comparatively large capacity, which is soconstructed and assembled that its parts areo f light weight, andtliedevice may be sent-through the mails instead of being shipped byfreighter express as heretofore; and in particular in that. the severalparts fare so constructed-and arranged with re spect to each other thatdismounting and) assembling is quickly and iii imediatelydone.

A. further, object of 'thi s invention resides in constructing acentrifugal separator wherein the bowlbarrel surroundlng the rotatable.bowl is detachable with the bowl,

thus permitting a closer fit anda more coin pact and lighterarrangement.

A further feature of this'invention resides in supporting the bowlbarrel on the drag bush surroundi'i'ig the lower nozzle of the rotatingbowl whereby the weight'of the bowl barrel acts as adrag for the bush.

Still a further phase of the invention reside'sin the means forpositioning the bowl barrel about the rotatable bowl with the weigh't ofthe barrel freely; resting on the bush which centers the jbowl,'thepositioning means being constructed and arranged to prevent the barrelfrom rising or getting out of alinement. I

Another object "of the invention resides in providing a novel type oflatch for holding the'bowl barrel ii -position, which latch includesmeans forpreventing it from rattling during the high speed rotation ofthe bowl.

Yet another object of this invention resides in providing a novel meansfor supporting the supply can in operative position over the feed cup,so that milk orotherfiuid is properly fed from the supply can to thefeed cup and thence to the inlet nozzle of the rotating bowl."This-supporting means for the supply can is constructed and arranged toco operate with the means for positioning the kbowl barrel so' that thesupply can 'can not be properly placed in operative position untiltheb'owl barrel islocked in its proper place;

Yet another featureof the invention .reside's in thes iniple type ofvalve'and operating means therefor whereby the supply of fluid passingfrom the supply can to the feed cup is conveniently regulated.

show the interior mechanism;

the same and i I i g Fig. 6 is adeta ljsectional view of the conv Afurther feature of this invention resides -x I in the simple means forcentering the feed j cup on the supporting stand, which means sconstructed,and arranged to also act as a centering means andsupport-for the drag bush for preserving the true'alinement ofthe Q dragbush which in turn not only supports 5 'theguard barrel but alsopreserves the true alinein'ent ofthe rotating bowl.

These and/other objects will in partbe obvious and willin fullydisclosed.

In the drawings which show byway i illustration one invention. V V. 1 v

Figure 1 represents a sideview of the embodiment of the present devicewith the feed cuppartially broken away V Fig; 2 is I certain of'theparts being broken away to Fig. 3 is' a sectional plan View;

part be hereinafter more a view at rightfangles thereto,-

Fig. 4 is adetail, view of the feed cupicentering' means and drag bush;l ig; 51s a collective perspective view of t-rol valve for the supplycan.

Referring now'in detail to the drawings;

the milk separatorjcomprises a light, durable standard or frame made ofsheet steel parts pressed into proper shape by. power pressesand'secured. rigidlyf together'. Preferably this frame or standardiscomposed-of four 1 sheet steel stampingsan'upper piece or gear case 1,-two side pieces2 and 3, one for each side, and a bot-tom piecei l. Thegear case 1 is preferably made pressing itinto I basin 'form,' not onlyto the end thatfthe usual gearing for driving thebowl spindle,

three of which are shown as at 5', 6 and? i in Fig. 2, can be mounted onsuitable. spindles 5-3, 9 and 10. passing from one side of .the

case to the other, but also thatrthis case will effectiyely hold thelubricating oilin'to which the bottoms of the gears dipso asto splashthe lubricating oil about as heretofore. By

constructing this gearcasing of-pressedsteelin one integralpiece ratherthan inakingit v in two halves attached to theupper endof the sidepieces and welded together, all daii-' ger of foil leakage from. thegear. case is obviated. two side pieces areprovided at their upper endswith cradle-shaped extensions which,

Asshown clearly'in Fig. 2, the.

way from one pieceof metal pressed into basin-form, but inverted. Thefour pieces including the upper basin 1, the inverted lower basin 4, andthe intermediate side pieces 2 and 3 are secured rigidly together toform a light unitary standard of pressed .sheet steel. The open top ofthe upper gear case or basin 1 is adapted to be closed by a scribed.

suitable frictional cover 11 of any desired design.

The large gear 5 inthe gear casing 1 intermeshes with the usual worm 12rigid with the vertically depending bowl spindle 13 which is mounted ina bearing carried in the upper part of the casing. This hearing will befurther described in detail. The hanging spindle 13 passes freelythrough an opening 14 in the'bottom portion of the gear casing 1, whichconstruction permits the free and unrestricted rotation of this bowlspindle.

p The bottom of the bowl spindle provided with the usual type of bayonetconnection 15 with the upper portion 16 of the rotating bowl 17'. Thisbowl. is provided with a lower milk feeding inlet or nozzle 18 shown indotted lines in Fig. 2. Inasmuch the construction of the bowl per se isnot new, no further reference to its detail construction will be made.The bowl barrel or guard barrel 19 surrounding the bowl is made of sheetmetal and is detachable, thus permittinga closer fit, smaller size, andlightness in weight, and also. permittinp the easy removal of the bowland its parts for cleaning purposes. To this end, the bowl barrel isformedas a cylinder, preferably closed by a, flanged end cap 20 having acentral opening: 21 surrounded by a depending flange 22. This bottomclosure 20 is also provided with openings 23 and 24 arranged on oppositesides of the central opening 21. The upper end of the cylinder ispreferably formed with the lower feed pan 25 integral therewith,whichmay be accomplished by soldering or otherwise, and just below thisintegral feed pan 25, the cylinder is provided with a rigid sleeve orcollar 26 formed with oppositely projecting locking lugs 27 which arerecessed as at 29 to receive the barrel latch hereinafter de-Preferahly, the nozzle 30 of the lower receiving pan is supported bymeans of a brace 31 either welded or soldered to the nozzle 30 andcollar 26. By means of the above construction, the integral bowl barreland lower receiving pan may be removed as a unit. The upper rim 32 ofthe lower receiving; pan is constructed to make a friction fit with theupper receiving pan 33 which is provided with an integral nozzle 34. Adetachable cap 35 also makes a friction fit with the top of the upperreceiving pan. The upper and lower receiving pans are provided withsuitable apertures so that the revolving bowl spindle 16 and bowl 17 arenot in contact therewitln' Preferably,-the upper receiving pan isprovided with an inwardly projecting bottom piece or flange 36 which isprovided with an upwardly projecting neck 37 slightly spaced from thespindle in. his piece 36 constitutes a bottom for the upper receivingpan from which the milk flows out through the nozzle 34 as is well knownin the art. It will also. be observed that the cap 35 is formed with acentral opening 38 spaced from the spindle 16 so that there is nointerference with the separator bowl and spindle.

Means are provided for mounting the feed cup directly on the basin 4of-the standard and for centering the feed cup in its correct positionso that the nozzle 18 of the re vol vinp; bowl spindle which dependsintothis feed cup, will be maintained in correct position relativethereto. To this end, the sheet metal base 4 is provided with an insert39 provided with upstanding lugs 40 preferably constructed as quadrantsof-a circle, which quadrants are preferably made by slotting theprojection 39 in radial directions at right angles. If desired, theseprojections may be formed by strikingup the sheet metal of the base 4.

The feed cup 41 is provided with cooperating means for centering it onthe lugs 40. In the preferred form,'the base of the feed cup is providedwith an aperture for an insert 42 comprising similarly formed struck-uplugs 43 and cross passages 44, the lugs 43 be ing struck up from sheetmetal and thus being hollow underneath so that they will exactly fitover the lugs 40 of the insert 39. In this manner, the feed cup is heldfixedly in position.

Means is also provided in connection with this centering means for alsocentering the drag bush, which in turn not only centers the nose 18 ofthe revolving bowl, but also supports the guard barrel 19. Preferably asleeve or ferrule 48 is provided to surround the upstanding lugs 43 ofthe insert 42. This sleeve is formed with notches 49 which are inalinement with the cut-out passages 44, and constitute means forpermitting the free flow of milk or other fluid from the feed cup intothe central passages 44 and thence to the nozzle 18 of the rotating bowlas will be hereinafter described.

It is manifest that this fornule 48 may be either soldered to the baseof the feed cup 41 or may fit loosely around the upstanding projections43, the former construction being cation.

' in detail inasmuchas itifo'rms the subject matter of aseparateapplication issued to D.

' T; Sharples',February'G, 1923, PatentNum fber "1,443,967 and whichapplicationis assigned to the assignee'ofithis present appli-' This dragbush issuppo'rted .on the lugs 43 within the ferrule,- and is free toshift laterally within this ferrule. shown best in Fig. 4:, the dragbush is situated between the flange 22 of the guard barrel, 19

and the nozzle 18 the'rotatable boewl so that the horizontal inner ledge22 of theguard barrel rests upon the drag bush thereby supporting theweight of the barrel. It will also be noted that this depending flange22 on: the barrellies within the ferrule a8. The end of the feed cupopposite that end which contains the centering lugs 43 is enlarged orrounded as at 51 to form a seat for a float such positionso that theweight of'thebowl barrel rests on the drag bush 50, while pre 7 rentinthe bowl barrel from risin refer- ZD b, 7

ably comprises the pivoted latch shownclearly in Fig. 3. In thisconstruction; the upper portion ofthe standard is provided with atransverse pin 04 to which is pivoted a latch i 55 formed in its outerend with-a crescent shaped recess 56 adapted to surround a portion ofthe bowl barrel 19. This latch 55 swings on this horizontal pin'54i froma raised disengaging position to a horizontal locking position, and toaccomplish this locking, the

I outer'ends of the crescjentfshaped latch are provided with downturnedlugs 57 which enter into the recesses29 of ;the'l ugs 2 7 on.

the-sleeve 26., Thelatch 551s also provided with a shiftable keeper'58pivoted at a point 59 so that it will swing fromfan'outer position shownin dotted lines in Fig/'3 to a closed position shown in full linestherein, where it wedges between the lower rim of the lower receivingpan and'the' upper shoulder of the'sleeve 26, Preferablythe pivotalconnection 59"is loose, the pivotal point thereof being provided withacoil'ed spring which? puts and eliminates all rattling.

.A supply can'53 of rathe'r largecapac'ity is v 1 adapted to besuspendedfroin the standard or frame just over the feed cup; 'The-p'ie'ferredmeans for holding the can in this position comprises a bracket 53"attached to one side of the standardfivhich bracket is adapt- .ed toengage a handle 53" on-the side ofthe can so that when this loopedhandle isslipped over the bracket, the can will be suspended in ,thedesired position. As shown in Fig. 3, this bracket53' is located onjthestandard at such a point that it is impossible toplace'the plic ation,

its outer end partway down t great resiliency provided. The bottom of vcage 70 receives a spherical race a the keeper under tension bowl swassidewiseg or the bearing iitself supply can-"on the bracke't as long asthe latch and keeper 58 are swung to outward position shown indotted'ilines inthis figure; 'There-- fore; ply can cannot the supplying 60 which receives avalve seat 61 provided with" lateral ports 62.

be'positioned. The bottom of can 53 is provided with an open-The'topiflii of this valve seat 61 is provided withac'entral stud 6 1 whch forms a pivot' for the rotary valve 65 nesting within thevalve-seat.This-valve unless thebowl barrelis locked the sup 65 is 'likewisefprovided with ports66'which whenfthe' valveisturned properly,register wit-lithe ports 62 of the seat thereby permit ting mill: toflowdown through. the discharge port '67 which is circular, toreceive thepro- 'ecti'ng,c0nicalnose or float52. Thefba'se'of the 'rotatablevalve65 is provided? with a flange 68 about which-fitsa curvedhan dle' 69'extendingto the'side o f'the can where it is easily operable to anon oroff position. In

' this manner, the flow of milk'fromthe supply can'tothe feed CllpdSeasilycontrolled:

7 In the upper part of Fig; 2 is discloseda novel" bearing for thehanging "spindle 18 which'whileshown is not'clain ed in this apof aseparate application about to} be filed by David T. SharplesQ In thepresent. construe tion the hangingbowl spindle j13is mounted, forrotation' inabearing"comprising a resili ent' metal c'age70 whichispreferablylin' the form of a cup having slots :71 cut in its sides partway down. The upper rirn'or periphery of this cup is flangedas at 72 soas to'pio vide a shoulder-seating ona corresponding shoulder of -ast-ationar'y ring 7 3 carried 'loy suitable "fastening screws74 on thebasin :1. By slotting this netahcage all around from 0 its other end,

this cup or" V p 7 5 for supporting the balls 76 which seat the since itform's-the subject-matter conical shoulder 77 of the shaft-or spindle13.

By means of this construction,,it is evident that the ball r'ace'and-consequentlythe bowl andrevol'ving parts are supported by a metalspring cage which givesela'sticity or resili ency in all .balls willnevertheless revolyei-n a circle and directions, either horizontally orvertically, and at alltimes'jtends toreturn the bearing to itsnorinalcentral position. This in' properposition as regards the revolving I abowl spindle. the plane passing-through the center I of the balls willalways remain'at right'a'n'gle's' to the This is due tdthe fact thataxis of the 'revolving'b'owl spindle when the axis sways to one side orthe other; 'Manifestly this resultsfro'rn thefact that theball race isapproximately a section of a sphere.

So also in "the upper portion of Fig.- -2-is" shown in detail a novelmeans for preventing the esoape of Iuhfiioant througlilthe' oii'tlet in:the gear easing through which the spindle 13 depends. This constructionnot olainred herein since it. forms the basis of a separat e"applioa'tionfiled David T. Sharples. J 1 i V d AsbefOre stated the verticaldepending" spindle passes freely'through the opening the bottom. of thegear case containing the Plubrioat ing oil so that the spindle is freeand unobstructed! in its rotation. oweveriiit. is of the utmostimportance that no lubricating oil: eseape through this opening 14 orrun dowh thespindle' 13 into the b'owl, either when the bowl is runningor when it hast come to rest. To prevent this an oil deflectorisflocat'ed at the mouth of the openingi andIv extends oon c en tricallyi aloout this spindle upwardly so as to aotas a" shield sleevi78zextends inwardly toward theiopenl- 111g? iiaiidiuienee upwaraiyi praner with shaft 13 as at 81, thisla tter po rtion constitu-t'es anupstandiiigi flange and forms with the outer portion of the base 80' apocket 82 which i sfpreferablyproi idd with: a drain hole}coniinuniiz'ating{withthe'gear easing sotthatany .oil collecting; in,this" pocket will: drain back into thegear casing;

Within this deflector 78 is located the oil shedde-r 83 Which-is fiXedrigidlylto the" spindle 13. ,This oil shedder 83 has an: out; Wardlyprojeot inglfi ang e 84,05 in;lieu thereof; a notch, zwhich lflangedirects the T oil outwardly undercentrifugal force-asthe spin- 7 dle.rotates. 1 The oilisthusthrown into the pocket 82 of thedeflector. :Itis of the utmost importance thaththe diameter of the" opening betweenthe upper rim of t'hedeflector 78 and-thev spindle be not'greaterthantheidiameterof the flange 84 and also that the diameter of theopeninggbetween the flange 81 and the spindle 'l3Q beg ieater' than thediameterof the flang'e 841-. Thisdifference is Very slightand is justenough for the/flange to pass; from the opeiiing. This constructionpermits: the flange 84 to p'a-ssfreely into the deflec'tor when theparts are; assembled; it will 1 be noted from., this that' a straightline passing through the inner-edge of the upper opening to theinnerthisffiange SI-may extend inwardly to a" point within the diameter orthe; flange s4 bii't not touching spindle When it is desired todisassemble the dei ice, the ange- 81', ay, unscrewed and the she elderre moved through the opening. I Y

It is obvious that minor changes in t'he details of construction and thearrangement of the pa'rt's'niay be made without eparting from the spiritof the invention as set forth in the'appendedclaim's.

D av ri'g thus descr'bed the invention what we claim as new anddesire't'o se'ur b? Let tears-Patent, isa 7 1. In a device of the classdescribed the Combination of a rotatable bowl, a drag: bush surroundingthe free end thereof and akb'owl; barrelsurrounding the rotatable bowl,and

drag weig'ht for bush; v

' 2., In at device of the class desoribed, the

bush surrounding the' lower endof said? bowr ndga bowl barrelsurrounding said rotatable bowl and: restingon said drag bush, wherebythe weight of said bowl barrel act' as a; drag weight; for said hush.

31" n eentjr'ifiigal separator, the combination of a supporting stand, abowl rotatably nounte'd thereon, a drag bush surrounding'the lowerendvof said bowha'bowl'barrel surrounding said howl, means forsupportiiilg said barrelwithits weight freely; resting. on' saididragbush, said means c011- struotedand arranged to prevent the rising",orzli fting of said barrel. v .41 centrifugal separator, thecombinationof a: supporting standta' bowl rotatably molinted thereon,awdrag bush surrounding themver ortion, of said'bowl, a bowlibarrelsurrounding saidlbowl; means en aging the upper" portion of said barrelfor centering; the same an d for holding'it from rising, said meansbeing constructed and arranged. to permit the weight ofsaid bowl to restfreely on said drag bush; I

5L Ina centrifugal separator, the combination of a support, a entei'inghub thereon, a feed cup, means for detachably centering;

sa id feed cup on.saidhub,labowl barrel, and a tion of a frame formedwith a centering hub,

contacting with said bush so as to'act as a Combination of a rotatablehanging" howl a a a feed cup, means for detachably centering said feedcup on said hub, a ferrule centered about said means and forming withsaid means, milk feeding passages, a drag bush disposed within theferrule, a hanging bowl barrel, said barrel havlng its lower endconcentric with said drag bush and supported thereby, I

7 In a centrifugal separator, the combination of a supporting framehaving upstanding centering lugs, a feed cup having corre- V spondinglyshaped struck-up depressions in its bottom interfitting with said lugsto detachably center said feed cup,'a ferrule centered on said struck-updepresslons, and a bowl barrel carried by said frame and provided with acentering flange on its bottom located within the ferrule of said feedcup, a drag bush within said ferrule and supporting the weight of thebowl barrel.

. 8. In a centrifugal separator, the combination of a support, a feedcup, a hanging rotatable bowl, means for detachably centerin said feedcup in supported position on said frame and for detachably centeringsaid bowl in said feed cup, said centering mean providing a feeding milkpassage from said feed cup to said bowl.

9. In a centrifugal separator, the combination of a support, a feed cup,a hanging rotatable bowl, a drag bush adapted to sur 7 to the bowl.

round said'rotatable bowl and to support the weight of the bowl barrel,means for detachably centering said feed cupon'saidsupport,

said means constituting acentering means I for the drag bush,,and saidmeans const tuting a milkfeeding passage from the feed cup 10. In acentrifugal separator, the combination ofa standard, a rotatable bowlcartively positioned on the standard, said latch being constructed andarranged to prevent the proper location of said supplycan on saidstandard until said'latch is in'lockedposition.

11. In a centrifugal separator, thecombination .of a standard, arotatable bowl cared to be positioned onthe base of said standard, asupply can having a bottom portv 50. ried thereby, a feed cup for saidbowl adapt In testimony whereof, we afli'x our signa- 40 ried thereby, abowl barrel surrounding said I Q bowl, a latch for locking said'bowlbarrel in position, a supply can adapted to be opera-

